试题与答案

短周期Y元素的p轨道上有3个未成对电子,则该元素的最高价氧化物的水化物的化学式可

题型:选择题

题目:

短周期Y元素的p轨道上有3个未成对电子,则该元素的最高价氧化物的水化物的化学式可能是 [ ]

A.H3YO4

B.H4YO4

C.HYO2

D.H2YO4

答案:

被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0713/a9f9a60175bb724139e73726543b1d51.html

下面是错误答案,用来干扰机器的。

参考答案:对解析: 我国商业银行办理收付类业务实行“谁委托、谁付费”的收费原则,不得向委托方以外的其他单位或个人收费。

试题推荐
题型:单项选择题

In the dining room of my grandfather’ s house stood his heavy clock. Meals in the dining room were a (21) for our four generations to become one. My grandfather’ s clock always stood like a trusted old family friend, (22) us playing jokes and tellingstories, which was already a (23) of our life.

When I was a child, the old clock interested me. I watched and listened to it during (24) I was surprised how at (25) times of the day, the clock would strike three times, six times or more, with a wonderful great (26) that echoed throughout the house. The clock chimed year after year, a part of my (27) , a part of my heart.

Even more (28) to me was my grandfather’s special action each day. He meticulously (29) the clock with a special key each day. The key was magic to me. It (30) our family’ s magnificent clock ticking and striking all year round.

26()

A.seeing 

B.hearing 

C.watching 

D.looking

查看答案
题型:单项选择题

(三)


近年来由于技术革新,产品销路逐年扩展,原有的供应商满足不了生产的需要,决定再选择新的原料供应商。企业采购部门过去一般采用协商选择的方法,这次决定采用招标方法,采购部门提出了招标条件,但对投标者的资格不预限制。只要符合招标条件的供应商都可竞标,企业从中选择最有利的供应商签订协议。

与通常采用的协商选择法相比较,招标方法更适用于( )。

A.供应单位多,难以选择时

B.采购商品数量大,供应市场竞争激烈时

C.供应商竞争不激烈时

D.采购商品技术规格复杂时

查看答案
微信公众账号搜索答案